30 V, 8-Channel (Sourcing Output), 1 µs C Series Digital Module—The NI‑9474 works with industrial logic levels and signals to directly connect to a wide array of industrial switches, transducers, and devices. Each channel is compatible with signals from 5 V to 30 V, features transient overvoltage protection between the output channels and earth ground, and has a LED that indicates the status. The NI‑9474 is a correlated digital module, so it can perform correlated operations, triggering, and synchronization when installed in a CompactDAQ chassis.